[PATCH v2 13/36] soc: fsl: cpm1: tsa: Introduce tsa_version

Herve Codina
2024-08-08T07:11:49Z

Current code handles CPM1 version of TSA.

In order to prepare the support for the QUICC Engine (QE) version of
TSA, introduce tsa_version to identify versions. This will enable the
code to make the distinction between several TSA implementations.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
drivers/soc/fsl/qe/tsa.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/fsl/qe/tsa.c b/drivers/soc/fsl/qe/tsa.c
index 48a176cece86..297721a0d2b6 100644
--- a/drivers/soc/fsl/qe/tsa.c
+++ b/drivers/soc/fsl/qe/tsa.c
@@ -114,12 +114,17 @@ struct tsa_tdm {
#define TSA_TDMA 0
#define TSA_TDMB 1

+enum tsa_version {
+ TSA_CPM1 = 1, /* Avoid 0 value */
+};
+
struct tsa {
struct device *dev;
void __iomem *si_regs;
void __iomem *si_ram;
resource_size_t si_ram_sz;
spinlock_t lock; /* Lock for read/modify/write sequence */
+ enum tsa_version version;
int tdms; /* TSA_TDMx ORed */
struct tsa_tdm tdm[2]; /* TDMa and TDMb */
struct tsa_serial {
@@ -685,6 +690,15 @@ static int tsa_probe(struct platform_device *pdev)
return -ENOMEM;

tsa->dev = &pdev->dev;
+ tsa->version = (enum tsa_version)(uintptr_t)of_device_get_match_data(&pdev->dev);
+ switch (tsa->version) {
+ case TSA_CPM1:
+ dev_info(tsa->dev, "CPM1 version\n");
+ break;
+ default:
+ dev_err(tsa->dev, "Unknown version (%d)\n", tsa->version);
+ return -EINVAL;
+ }

for (i = 0; i < ARRAY_SIZE(tsa->serials); i++)
tsa->serials[i].id = i;
@@ -746,7 +760,7 @@ static void tsa_remove(struct platform_device *pdev)
}

static const struct of_device_id tsa_id_table[] = {
- { .compatible = "fsl,cpm1-tsa" },
+ { .compatible = "fsl,cpm1-tsa", .data = (void *)TSA_CPM1 },
{} /* sentinel */
};
MODULE_DEVICE_TABLE(of, tsa_id_table);
--
2.45.0